Sialyl Glycan Expression on T Cell Subsets in Asthma: a correlation with disease severity and blood parameters

Yu Liang Yeh, Wen Chia Wu, Reiji Kannagi, Bor Luen Chiang, Fu-Tong Liu, Yungling Leo Lee

Research output: Contribution to journalArticle

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Abstract

Memory T helper (Th) and regulatory T (Treg) cells play key roles in asthma. Certain sialyl carbohydrate determinants for selectins profoundly affect the migratory properties of memory Th cells, and the suppressive function of Treg cells. Previous studies have shown that the proportion of CCR4+ memory Th cells expressing sialyl 6-sulfo Lewis X (LeX) is elevated in asthma patients. We aim to investigate the roles of different sialyl glycans on T cell subsets in asthma. Using flow cytometry, we assessed the expression of three sialyl glycans, sialyl 6-sulfo LeX, cyclic sialyl 6-sulfo LeX, and sialyl LeX on memory Th and Treg cells, in the peripheral blood of asthmatic children. We also assessed the relationships between glycan-expressing cell percentages and asthma clinical parameters. Compared with controls, asthmatic children showed higher proportions of memory Th cells expressing sialyl LeX and sialyl 6-sulfo LeX. The proportions of memory Th cells with sialyl 6-sulfo LeX and cyclic sialyl 6-sulfo LeX expression in asthmatic children correlated with absolute eosinophil count and IgE level, respectively. Children with moderate-to-severe asthma had lower numbers of sialyl LeX positive Treg cells. Our study suggests that sialyl glycans on T cells may play important roles in the pathogenesis of asthma.

Original languageEnglish (US)
Article number8947
JournalScientific reports
Volume9
Issue number1
DOIs
StatePublished - Dec 1 2019
Externally publishedYes

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Hematologic Diseases
T-Lymphocyte Subsets
Polysaccharides
Helper-Inducer T-Lymphocytes
Asthma
Regulatory T-Lymphocytes
Selectins
sialyl-2-3-(6'-sulfo)galactosyl-1-4-(fucopyranosyl-1-3)-N-acetylglucosamine
Eosinophils
Immunoglobulin E
Flow Cytometry
Carbohydrates
T-Lymphocytes

ASJC Scopus subject areas

  • General

Cite this

Sialyl Glycan Expression on T Cell Subsets in Asthma : a correlation with disease severity and blood parameters. / Yeh, Yu Liang; Wu, Wen Chia; Kannagi, Reiji; Chiang, Bor Luen; Liu, Fu-Tong; Lee, Yungling Leo.

In: Scientific reports, Vol. 9, No. 1, 8947, 01.12.2019.

Research output: Contribution to journalArticle

Yeh, Yu Liang ; Wu, Wen Chia ; Kannagi, Reiji ; Chiang, Bor Luen ; Liu, Fu-Tong ; Lee, Yungling Leo. / Sialyl Glycan Expression on T Cell Subsets in Asthma : a correlation with disease severity and blood parameters. In: Scientific reports. 2019 ; Vol. 9, No. 1.
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